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Plymouth train station murder

"We were unloading the car and we could hear a kerfuffle going on inside the station," he said.

"I noticed all the drivers getting out of their cabs. As we got closer and the station doors opened, that's when we saw what was happening.

"It was like a scene from a film.

"The victim was lying on his back with people tending him and one first aider telling another to apply pressure to one of the wounds."

Mr Bristow said he saw another man, the alleged attacker, being held down by four people including British Transport Police officers and Great Western Rail staff, who have been praised for their brave response.